Design a sticker for a packaging

I need a sticker designed for a packaging for coffee.
The shape of the sticker is in the form of two boxes connected with a small tongue in the middle
Dimensions and shape below
Back
length 9.5 cm
Breadth 8.5 cm

Front
Length 8 cm
Breadth 8.5 cm

Tongue
Length 4 cm
Breadth 3cm

The design should be attractive and appealing to the consumer.